XRT91L34IV-F View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT91L34IV-F' PDF : 38 Pages View PDF
XRT91L34
QUAD CHANNEL MULTIRATE STS-12/3/1 AND STM-4/1/0 SONET/SDH CDR
REV. 1.0.1
3.0 JITTER PERFORMANCE
3.1 SONET Jitter Requirements
SONET receive equipment jitter requirements are specified jitter tolerance and jitter transfer. The definitions of
each of these types of jitter are given below.
3.1.1 Rx Jitter Tolerance:
OC-1/STM-0, OC-3/STM-1, and OC-12/STM-4 category II SONET interfaces should tolerate, the input jitter
applied according to the mask of Figure 10, with the corresponding parameters specified in the figure.
FIGURE 10. GR-253/G.783 JITTER TOLERANCE MASK
A3
Input
Jitter
Amplitude
(UIpp)
A2
slope= -20dB/decade
slope= -20dB/decade
A1
f0
f1
f2
f3
f4
Jitter Frequency (Hz)
OC-N STM-X LEVEL F0 (HZ)
OC1/STS11 STM0
10
OC3/STS33 STM1
10
OC12/ST1S212 STM4
10
F1 (HZ)
30
30
30
F2 (HZ)
300
300
300
F3 (HZ)
2K
6.5K
25K
F4 (HZ) A1 (UIPP) A2 (UIPP) A3 (UIPP)
20K
0.15
1.5
15
65K
0.15
1.5
15
250K
0.15
1.5
15
FIGURE 11. XRT91L34 MEASURED JITTER TOLERANCE AT 51.84 MBPS STS-1/STM-0
1 0 0 .0 0
Jitte r T ole rance , G R-253, O C-1 (51 M bps)
Mas k
Jitter Toleranc e
1 0 .0 0
1 .0 0
0 .1 0
0 .0 1
1E+0
1E+1
1E+2 1E+3 1E+4
Fre que nc y (Hz)
1E+5
1E+6
20
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